Getting up to speed on Security updates after Service Pack 2

I recently had to reinstall Windows XP Home Edition on my machine because I
was complacent and did not keep up on my updates. As a result, my machine
was riddled with worms, trojans, etc. So, I used a Win 98 boot disk and
deleted the partition and installed a fresh XP. I ordered Service Pack 2 and
installed that along with Norman Antivirus. However, I still need to get up
to speed from SVC Pack2. Any suggestions on where I can find these updates
so I can download them? I won't be using my machine as I don't want to risk
it. In other words, that page where you go and your machine is scanned for
applicable updates won't work because I'll be using someone else's machine.
I was hoping someone would be able to tell me exactly where to go and I'll
download them onto my jumpdrive. Any help would be greatly appreciated!!

DanB